-You were not in when I came over to your house.
-Oh, I ____________ for a friend from England at the airport.
| A．was waiting | B．had waited | C．am waiting | D．have waited |
Do you know the difficulty he had his family ?
| A．to support | B．supporting | C．supported | D．being supported |
They failed to realize the use the information.
| A．we made of | B．which we made | C．for our making | D．for us to use |
Listen ! The matter has something to do with all of us.
| A．to discuss | B．to be discussed |
| C．being discussed | D．having been discussed |
after his death that he was recognized as a great composer.
| A．It was not until | B．Until | C．It was until | D．Not until |
you eat the correct foods be able to keep fit and stay healthy.
| A．Only if ; will you | B．Only if ; you will | C．Unless; will you | D．Unless ; can you |