We should ________ the best person for the job, and I feel Jane is a remarkable candidate.
The firefighters would not allow anyone______ into the room on fire to collect anything.
_______ the Water Cube, we were surprised by the design.
---What do you think of the American singer Lady Gaga’s performance?---Too crazy, but if I _____to her concerts held yesterday, I would have enjoyed it.
I won’t call you ________ something unexpected happens.
The foreign guests, ____ were government officials, were warmly welcomed at the airport.