He’s given me so much help that I really want to do something for him _____.
| A．in turn | B．by turns | C．in return | D．in answer |
Hisfamily____alargeone.Thewholefamily____watchingTV.
| A．is…is | B．are…are | C．are…is | D．is…are |
Neither Tom nor his parents ______ at home.
| A．is | B．are | C．has | D．was |
The only means to achieve success ___ to appeal to arms.
| A．is | B．are | C．were | D．have |
One or perhaps more pages _______.
| A．is missing | B．has been missed | C．are missing | D．was missing |
The Smiths ______ their breakfast when the doorbell rang.
| A．had | B．has been having | C．are having | D．were having |