You had better book rooms at the hotel in advance you should find no room on your arrival.
| A．so that | B．even if |
| C．in case | D．now that |
_______ has recently been done to provide more buses for the people, a shortage of public vehicles remains a serious problem.
| A．That | B．What | C．Despite what | D．Though what |
There are many other examples _______ the development of Chinese writing.
| A．reflect | B．which reflecting | C．reflecting | D．reflected |
Listen! His family must be quarrelling, _______?
| A．mustn’t it | B．isn’t it | C．aren’t they | D．needn’t they |
More than one _______ the people heart and soul.
| A．official has served | B．officials have served |
| C．official has served for | D．officials have served for |
This problem may lead to more serious ones if _______ unsolved.
| A．making | B．remained | C．keeping | D．left |