Ms. Romero is the first person known with Ebola outside of Africa.
| A．to infect | B．to be infected |
| C．infecting | D．to have become infected |
—Must I return this magazine within one week?
—No, you ________.
| A．didn’t have to |
| B．mustn’t |
| C．hadn’t better |
| D．shouldn’t |
You ________ practise the drums while the baby is sleeping.
| A．needn’t |
| B．mightn’t |
| C．mustn’t |
| D．won’t |
As it turned out to be a small house party, we ________ so formally.
| A．needn’t dress up |
| B．did not need have dressed up |
| C．did not need to dress up |
| D．needn’t have dressed up |
—James didn’t turn up last night,did he?
—No. He ________. We had changed our plan.
| A．shouldn’t have come |
| B．needn’t have come |
| C．didn’t need to come |
| D．needn’t come |
—Has Mary finished writing her article?
—No, it ________ before class was over.
| A．should be finished |
| B．should finish |
| C．should have finished |
| D．ought to have been finished |