—May I put my car here?
—Sorry, you mustn’t. Look at the sign, it says “_______”.
| A．NO PHOTOS | B．NO PARKING |
| C．DANGEROUS | D．NO RIGHT TURN |
Would you mind ______ those old jeans?
| A．don’t wear | B．not to wear | C．aren’t wearing | D．not wearing |
I have been skating _______ nine o’clock.
He _____ when the UFO arrived.
| A．was sleeping | B．were sleeping | C．has slept | D．is asleep |
The teacher said that they ______ hard-working students.
| A．is | B．are | C．were | D．was |
His father _____ to Nanjing. He _____ back next week.
A. has been, is B has been, will be C. has gone, is D. has gone, will be