采取合同保全措施应当在()
A．合同生效后至合同履行完毕前进行
B．合同被解除后进行
C．合同被撤销后进行
D．合同被宣告无效后进行
参考答案：A
Some StraightA students in school ________ to be less successful in society than they ________ expected.
A．turned out; are
B．have turned out; were
C．will turn out; were
D．had turned out; were
We’ll stay at home if it ______ this afternoon.
A．rain
B．rains
C．to rain
D．will rain
