These two Christmas trees are of __________ size, but the one they bought yesterday is maybe twice __________ size of them.
| A．the; the | B．a; the |
| C．a; a | D．the; a |
The police ____the murderer everywhere when he suddenly appeared in a theatre.
| A．is searching for | B．were searching for | C．are searching for | D．were searching |
John has two brothers， but either ____out of work now.
| A．are | B．is | C．has | D．have |
____can be done _____been done.
| A．All； have | B．All that； have | C．All； has | D．All that； has |
The Chinese people _____hard-working and brave.
| A．are | B．is | C．has been | D．are being |
Nobody ____to smoke in the cinema.
| A．allows | B．allow | C．is allowed | D．are allowed |