I’m very tired. I _______ on the night shift for several weeks.
| A．worked | B．had worked |
| C．have been working | D．have worked |
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 punishment was unjust, he accepted it without complaint.
| A．So long as | B．Even though |
| C．Since | D．While |
He is better than _______ I last visited him.
| A．when | B．that |
| C．how | D．which |