If we can keep ____ this speed, we'll arrive there in two or three hours.
| A．on | B．to | C．up | D．at |
He always thinks of _______ he can do more for the people.
| A．what | B．how | C．if | D．whatever |
______ halfway through the exercise, the teacher changed his mind and collected all our papers.
| A．When only being | B．When we were only |
| C．Being only | D．Having been |
I didn’t mean ______ anything, but these apples looked so good I couldn’t resist ______ one.
| A．to eat…trying | B．to eat…to trying |
| C．eating…to try | D．eating…to trying |
“I know she was in because I heard her radio, but she didn’t open the door.” “She___the bell.”
| A．may not be hearing | B．may not have heard |
| C．must not have heard | D．must not be hearing |
—How are you doing all these years, Jim?
—Nothing new. Everything is going on _______ it was years ago.
| A．as | B．while | C．when | D．since |