His sister’s never been to the Summer Palace, _______?
| A．is she | B．has she | C．hasn't she | D．isn't he |
—Do you know ______?—Yes. She is doing her homework.
| A．what is your sister doing | B．what your sister is doing |
| C．when your sister is doing homework | D．where is your sister doing homework |
Waste paper _______ everywhere. It’s our duty to keep the school clean.
| A．throws | B．are thrown | C．shouldn’t be thrown | D．should be thrown |
My pen pal said he would write to me, but I _____ any letters from him so far.
| A．won’t receive | B．haven’t received | C．hadn’t received | D．didn’t receive |
—Lin Kai, hand in your homework, please.
—Oh, sorry. I ______ it at home this morning.
| A．was leaving | B．has left | C．will leave | D．left |
—Whose home is ______ away from school in our class?
—Liu Mei’s.
| A．father | B．far | C．the farthest | D．near |