Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it.
| A．to see | B．to be seen | C．seeing | D．seen |
相关试题
Ladies and gentlemen, please fasten your seat belts. The plane _____.
| A．takes off | B．is taking off | C．has taken off | D．took off |
The teacher spoke very slowly ____the students could understand everything
he was saying.
| A．in order to | B．so as to | C．so that | D．such that |
These shoes look very good. I wonder _______.
| A．how much cost they are | B．how much do they cost |
| C．how much they cost | D．how much are they cost |
Tell us about the people and the places _
____ are different from ours.
| A．that | B．who | C．which | D．whom |
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