I don’t think there will be many students left in the class，_______，because the conditions are not fit for studying.
| A．if any | B．if possible | C．if ever | D．if so |
—We are worried about Tom. Why hasn’t he come back?
—Don’t worry. He ______ in a traffic jam.
| A．might be caught | B．may have been caught |
| C．can have been caught | D．should have been caught |
He is busy preparing a secret present for his Mum, ______ is cheap but special.
| A．one what | B．what | C．one that | D．that |
Jack, who claimed ______ everything clearly, however, he told a lie.
| A．to have heard | B．to hear | C．having heard | D．hearing |
—I’m thinking about withdraw (退出)from the committee.
—Think it over. Once you decide, you won’t be ______ to the committee again.
| A．adopted | B．admitted | C．adapted. | D．allowed |
It was ______ his office.
| A．not until the rain stopped did he leave |
| B．not until did the rain stop that he left |
| C．not until the rain stopped when he left |
| D．not until the rain stopped that he left |