--- Children are the future and hope of our motherland. ---_ important work it is to teach children!
A. How B. How an C. What D. What an
Marie Curie ________ radium, but Edison ________ the light bulb.
A.created; discovered B.discovered; invented
C.invented; discovered D.invented; created
—Look! Somebody the lights.
—Well, it wasn’t me. I didn’t do it.
A. turns off B. is turning off C. was turning off D. has turned off
You will never gain success ______ you fully put your effort into your work.
A. although B. unless C. if D. because
—He hasn’t watched the movie “So Young”, has he?
—______. He told me it was very moving and he’d like to watch it a second time.
A.Yes, he has B.Yes, he hasn’t
C.No, he hasn’t D.No, he has
I have a poor memory so I have to ______ my phone number book every time I want to make a call.
A. look up B. look at C. look for D. look over
