问题
填空题
用所给词的适当形式填空。
1. — Where is Mr. Wang?
— He ______ (go) to the library. He wants to borrow some library books.
2. At first she ______ (think) about going camping, but later she changed her mind.
3. They are from ______ (foreigner) countries.
4. I ______ (discover) the truth, but I couldn't tell it to others.
5. How long have you been ______ (wait) here?
答案
1. has gone 2. thought 3. foreign 4. discovered 5. waiting