—Tom , where is Lucy ?
—She ______ be in the library．But I’m not sure．
| A．must | B．need | C．may | D．has to |
This hat is too cold. Why not __________ buying a new one?
| A．continue | B．suggest |
| C．imagine | D．consider |
—Mum, I want some pocket money.
—Well. I won’t give it to you __________ you wash your clothes.
| A．if | B．unless | C．while | D．though |
—Must the government of Philippines (菲律宾政府) say sorry to China？
—Yes, they __________. Their behaviour has deeply hurt Chinese people.
| A．need | B．must | C．can | D．may |
—Excuse me, look at the sign “No photos!”
—Sorry, I __________ it.
| A．don’t see | B．didn’t see |
| C．haven’t seen | D．won’t see |
—Do you know the young man well?
—Sure, we __________ friends since we met in Nanjing three years ago.
| A．have been | B．were |
| C．have made | D．have become |