. --Can you smell something _________ in the house?
--Oh! I forgot to turn off the gas cooker!
| A．to burn | B．burning | C．having burnt | D．having been burnt |
“How long do you suppose it is _______ he left for Japan?” “No more than half a month.”
| A．when | B．before |
| C．after | D．since |
Mr Zhang is mild in character. He never shouts ____ he is very angry.
| A．if | B．even |
| C．though | D．even when |
John shut everybody out of the kitchen _______ he could prepare his grand surprise for the party.
| A．which | B．when |
| C．so that | D．as if |
_______ rich one may be there is always something one wants.
| A．whatever | B．Whenever |
| C．however | D．Wherever |
________ the grandparents love the children, they are strict with them.
| A．While | B．As |
| C．Since | D．Because |