The children ＿＿very quiet；I wonder what they ＿＿up to.
| A．were； are being | B．are being；are | C．are；do | D．are being；do |
_____ and I’ll get him. He is in the next office.
| A．Go on | B．Keep up | C．Hang up | D．Hold on |
You can’t use my bike _____ you return it to me by the weekend.
| A．if not | B．unless | C．because | D．though |
—By the way, Mary sends her love to you.
—______.
| A．Oh, the same to her | B．It’s great |
| C．That’s very kind of her | D．Thank you ever so much |
Helen ____ go on the trip with us, but she isn’t quite sure yet.
| A．shall | B．must | C．may | D．can |
Great changes have taken place in Cangnan. We’re sure Cangnan will be even_____ tomorrow.
| A．good | B．better | C．best | D．the best |