—____ your sister know Tom?
—No, she ____.
A. Do; don’t B. Does; doesn’t C. Do; do
This math question is too difficult. Can you help me?
| A．work on it | B．work out it | C．work it out | D．work for it |
Mr. Black asks the kids ________ in the river, because it’s too dangerous.
| A．swim | B． to swim | C．not to swim | D．swims |
He is very angry with his mother, because his mother alwayshim with the best student.
| A．compares | B．complains | C．tells | D．makes |
—What’s wrong?
—I can’t do my homework now. Imy homework in the classroom this morning.
| A．leave | B．forget | C．forgot | D．left |
My sister ______ go to bed _______ my mother came back last night.
| A．not until | B．doesn't; until | C．didn't; until | D．aren't; until |