When the boss came in, these workers pretended to________ carefully.
#68221
A
working
B
be working
C
work
D
have been working
推荐题目
   Is this the piano _______ your familoy for over eighty years?
#77134
A
belonged to
B
belongs to
C
belonged
D
belonging to
. The ______ house is his.
#78303
A
new-built
B
newly-built
C
new-building
D
newly-building
Our English teacher is ______ our teacher; she is also our best friend. 
#68446
A
rather than
B
other than
C
more than
D
less than