Email is very popular today. People ______write letters to each other now.
| A．often | B．usually |
| C．seldom | D．never |
Difficulties are nothing _____we are not afraid of them.
| A．for | B．as | C．if | D．whether |
—What did your father ask you just now?
—He asked me ______.
| A．Whom I was chatting with | B．where I am with my friends |
| C．when would I go home | D．if I have finished my homework |
_____the doctors in the hospital is about100 and one fourth of them are _______doctors.
| A．A number of; man | B．The number of; men |
| C．A number of; men | D．The number of; man |
We will go out for a picnic if it _____tomorrow.
| A．won’t rain | B．isn’t raining |
| C．don’t rain | D．doesn’t rain |