Living alone in the central desert in Australia has its problems, _________obtaining water is not the least.
| A．of which | B．for what | C．as | D．whose |
_______ two exams to worry about, I have to work really hard this weekend.
| A．Besides | B．With | C．As for | D．because of |
The tickets are________ for 5 days only.
| A．favorite | B．available | C．convenient | D．familiar |
I had just stepped out of the bathroom and was busily drying myself with a towel ______ I heard the steps.
| A．while | B．when | C．since | D．after |
Teachers words and deeds always _______ a great effect _____their students.
| A．have, on | B．give, to | C．make, on | D．take, to |
——How much vinegar did you put in the soup?
——I’m sorry to say, ________. I forget.
| A．no | B．no one | C．nothing | D．none |