—The plane is due to take off at 7:50 from the airport. ______ we fail to arrive there in time?—Try to take another flight then.
This is a______ but extremely difficult technology in the future.
They only hear while their hands and eyes are_________ occupied.A other than B. no other than C. otherwise D. other ways
No sound and no voice______ for a while.
In America, ______ car is ______ popular means of transportation.
People think that ______ opening ceremony of the 29th Olympic Games is _____ great success.