Nobody knows ____.
A .what wrong is.
B .when did he come back.
C .if Kyle will play the solo.
My father will be back from Nanjing ___ a week.
A.in B. after C. behind
I want to be _____ actor in the future.
A.a B. an C. The
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 |