The work is so difficult that I don’t know _______ to do it.
A. what B. how C. where
Lingling needs some vegetable. She ________ some in the market tomorrow.
| A．buys | B．bought | C．is going to buy | D．buy |
________ stand too close to North Americans. Give them more personal space.
| A．Aren't | B．Didn't | C．Won't | D．Don't |
—________ you play the piano for us?
—Sorry, I can't play the piano, but I can sing for you.
| A．Can | B．Must | C．May | D．Should |
—Are these gloves ________, Betty?
—No, they aren't. My gloves are here.
| A．my | B．mine | C．your | D．yours |
—When were you born?
—I was born ________ April 23, 1979.
| A．on | B．in | C．at | D．to |