We ________ last night, but we went to the concert instead.
| A．must have studied | B．might study | C．should have studied | D．would study |
--- Hurry up. The bus is coming.
--- Oh, no. We mustn’t cross the street the traffic lights are green.
| A．until | B．since | C．while | D．after |
Sorry, you lost your purse; I hope it will some day.
| A．turn out | B．show off | C．show up | D．turn up |
A brilliant idea occurred to him, to his research in the lab.
| A．while devoting | B．while devoting himself |
| C．while he was devoted | D．while devoted |
Father doesn’t know Jack has been gambling; if he found out, I think he him out.
| A．will drive | B．must drive | C．drove | D．would drive |
--- What is the weather like tomorrow?
--- The weather forecast says a big snowstorm is .
| A．hoped | B．supposed | C．expected | D．announce |