_____, he talks a lot about his favorite singers after class.
| A．A quiet student as he may be | B．Quiet student as he may be |
| C．Be a quiet student as he may | D．Quiet as he may be a student |
By the time you arrive in Liverpool, we ___________ in France for two weeks.
| A．shall stay | B．have stayed | C．will have stayed | D．have been staying |
To maintain a nice relationship, both sides are advised to focus on _________ they have in common.
| A．what | B．that | C．which | D．whom |
After the disaster, the first thing the local government did was to provide _____for the homeless families.
| A．occupation | B．accommodation | C．equipment | D．furniture |
Most scientists seem to agree that ______ certain limit should be set on _______ consumption of cars to ease air pollution.
| A．a; the | B．/; the | C．the; / | D．the; the |
Helen devoted herself ________to her research and became a top scientist in the field of applied physics．
| A．seriously | B．extremely | C．entirely | D．strictly |