—Have you checked the engine?
—Yes, I did twice; there ______ be anything wrong with the car.
A. won’t B. mustn’t C. needn’t D. shouldn’t
There came a point in his life____ he had to think about seriously about his future.
A. what B. that C. when D. which
The old lady is said to have three children，two of ____studying abroad.
A. whom B. them C. all D. who
He had planned to make a compromise，but he changed his mind at the last minute.
A. therefore B. otherwise C. anyhow D. somehow
Security was such a major concern at the conference that no journalists could approach the meeting zone without ________ the special pass.
A. commanding B. issuing C. producing D. involving
—Mary, are you sure your aunt ___ back from America?
—Yes. My mother ___ me. I am going to see her now.
A. has come; told B. came; had told
C. had come; tells D. is coming; has told
