— Why do you look sad?
— There are so many problems _____.
| A．remaining to settle | B．remained settling |
| C．remaining to be settled | D．remained to be settled |
On Sundays there were a lot of children playing in the park, _______ parents seated together joking.
| A．their | B．whose |
| C．which | D．that |
—Some Chinese students find it difficult to understand native speakers when in London.
—Exactly, ______ they’ve learned a lot about grammar and known many words.
| A．if only | B．now that |
| C．even if | D．as if |
Hearing the news, he rushed out, ______ the book ______ on the table and disappeared into the distance.
| A．left; lain open | B．leaving; lying open |
| C．leaving; lie opened | D．left; lay opened |
“Mike is often absent from class.” “Tell him he __ answer for it if he goes on behaving like that.”
| A．shall | B．will |
| C．would | D．can |
When he realized the police had seen him, the man ______ the exit as quickly as possible.
| A．made off | B．made for |
| C．made out | D．made up |