—Have you finished the work?
—Not yet, but we'll keep ________ until we make it.
A. failed B. trying C. tried D. failing
At last，the teacher _________ who stole Li Ming’s pen.
A. find B. found C. found out D. looked for
They were all very tired, but ____ of them would stop to take a rest.
A． any B．some C．none D．neither
The children compete ______ each other to reach the other end of the pool.
A．against B．in C．at D. for
Do you know which is______ longest river in the world?
A. a B. an C. the D. /
词汇 (用所给单词的适当形式填空)
1.You can ___________ (成功）in business if you know English.
2.He had a big party for his _________(二十)birthday.
3.He has won ______(一些,几个）gold medals in diving since 1984.
4. That famous singer is a(n)_______（美国人）.
5.Which is _________（cheap), gold or silver?
