Sir, you _______ be sitting in this sitting room. It is for women and children only.
| A．oughtn’t to | B．can’t | C．won’t | D．needn’t |
an important position in a big company, Richard has a good chance to improve himself.
| A．Offered | B．Offering | C．Having offered | D．To offer |
It worries the couple a lot ______ their only son is behaving worse and worse these days.
| A．how | B．why | C．that | D．what |
People generally think that fairness and justice are at the centre of ______ they are striving for.
| A．how | B．why | C．which | D．what |
______ once every two years, whether it is a car, a bus or a lorry, is the rule that all drivers must obey in our country.
| A．Having been examined | B．Examined |
| C．Examining | D．Being examined |
In extreme weather, a worn tyre can break easily ______ it’s mended, as is often the case.
| A．when | B．where | C．which | D．that |