The teacher, with 6 girls and 8 boys of her class, ________ visiting a museum when the earthquake struck.
| A．was | B．were | C．had been | D．would be |
— Has Sam finished his homework today?
— I have no idea. He ________ it this morning.
| A．did | B．was doing | C．has done | D．had done |
You can come here to ask me ________ if you have any questions.
| A．at one time | B．at a time | C．at any time | D．all the time |
________ is no possibility ________ she can finish the task in two hours.
| A．There; that | B．It; that | C．There; whether | D．It; whether |
The purpose of new technologies is to make life easier, ________ it more difficult.
| A．not make | B．not to make | C．not making | D．don’t make |
Eventually he gave in to the wish of the ________.
| A．most | B．majority | C．average | D．common |