— Look! Lisa for nearly two hours. I think she needs a rest now.
—You’re right. Let’s meet her over there.
| A．was skating | B．had skated |
| C．skates | D．has been skating |
_________ the one-child policy, now most families have only one child.
A. Because B. Because ofC. Thanks for
---Have you ever fed them?
---__________. But I have cooked for them.
Yes, I have.B. No, I haven’t.C. No, I didn’t.
------ He is late for the meeting.
------ ______.
A. So am I B. So I am C. So I do
------ What a nice motorbike! How long have you ______ it?
------ About half a year.
A. had B. receive C. bought
There are several chemical factories ______ waste water into the river.
A. pours B. pour C. pouring