They pretended ________ hard when their boss passed them.A. to work B. being worked to be working D. working
______with such a difficult problem ,he didn’t know what to do .
Christmas is _____ special holiday when ____ whole family are supposed to get together.
Sales of CDs have greatly increased since the early 1990s, when people_____ to enjoy the advantages of this new technology.
. He had to drive faster to ______ for the lost time, which is considered dangerous to the passengers.
---What do you think of the film we saw last night? ---I feel______ that the film is well worth seeing once again.