increasing the distance of your walks, you may lose more weight.
| A．By | B．From | C．On | D．For |
The number of people invited __________ fifty, but a number of them _______ absent for different reasons.
| A．were… was | B．was… was |
| C．was… were | D．were… were |
The place was flooded ________ it had been raining for several weeks.
| A．because | B．because of | C．ever since | D．as a result of |
Mr. Smith has been here for only a few days, so he hasn’t left a deep impression _____ us.
| A．on | B．with | C．about | D．for |
I don’t think she will come to the meeting on time,?
| A．do I | B．do you | C．will she | D．won’t she |
It was so dark that he ______.
| A．didn’t dare to go out to fetch some water | B．not dared bring some water |
| C．dares to go out to bring some water | D．to dare to fetch some water |