Update, the answer will trim.

gistfile1.java

package jp.tomorrowkey.englishpractice;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class Main {

    private static ArrayList<Item> itemArray;

    static {
        itemArray = new ArrayList<Main.Item>();
        itemArray.add(new Item("give", "to"));
        itemArray.add(new Item("hand", "to"));
        itemArray.add(new Item("lend", "to"));
        itemArray.add(new Item("send", "to"));
        itemArray.add(new Item("sell", "to"));
        itemArray.add(new Item("show", "to"));
        itemArray.add(new Item("write", "to"));
        itemArray.add(new Item("bring", "to"));
        itemArray.add(new Item("teach", "to"));
        itemArray.add(new Item("throw", "to"));
        itemArray.add(new Item("mail", "to"));
        itemArray.add(new Item("read", "to"));
        itemArray.add(new Item("tell", "to"));
        itemArray.add(new Item("owe", "to"));
        itemArray.add(new Item("pass", "to"));
        itemArray.add(new Item("buy", "for"));
        itemArray.add(new Item("build", "for"));
        itemArray.add(new Item("find", "for"));
        itemArray.add(new Item("make", "for"));
        itemArray.add(new Item("bake", "for"));
        itemArray.add(new Item("cook", "for"));
        itemArray.add(new Item("get", "for"));
        itemArray.add(new Item("do [a favour]", "for"));
    }

    public static void main(String... args) throws Exception {
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new InputStreamReader(System.in));
            while (true) {
                int index = (int)Math.floor(Math.random() * itemArray.size());
                Item item = itemArray.get(index);
                System.out.println(item.getVerb() + " ?");

                String answer = reader.readLine();
                if (item.getPreposition().equalsIgnoreCase(answer.trim())) {
                    System.out.println("Correct!");
                } else {
                    System.err.println("Incorrect...");
                }

                System.out.println();
            }
        } finally {
            if (reader != null)
                reader.close();
        }
    }

    static class Item {
        private String verb;

        private String preposition;

        public Item(String verb, String preposition) {
            this.verb = verb;
            this.preposition = preposition;
        }

        public String getVerb() {
            return verb;
        }

        public void setVerb(String verb) {
            this.verb = verb;
        }

        public String getPreposition() {
            return preposition;
        }

        public void setPreposition(String preposition) {
            this.preposition = preposition;
        }

    }

}