——This wall of air is an effective answer to the problem and it ____ work.——But it is a question to put such a wall of air around the statue.
The two countries were ______ between 1989 and 1992.
The oil must be used up, ____ the light went out.
I like traveling by sea____ it is not rough.
---Has the train arrived? ---No, it all will be late ___ half an hour.
I wanted two seats____ Madame Gurie for Friday night, so I rang the cinema to seeif I could book two tickets.