My parents _______ have arrived at suppertime but their flight was held up due to the heavy fog.
| A．will | B．can | C．must | D．should |
—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，buthe 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 |