Computers ____ in offices and homes since 1970s.
#100256
A
have been used
B
had been used
C
was used
D
has been used
推荐题目
—Where are the guests to be from tomorrow?—Many an American boy and many a British girl as well as the teachers to he present.
#102956
A
have been invited
B
has been invited
C
were invited
D
was invited
Our school along with many other brother middle schools _____to take another joint test next month．
#99615
A
are
B
will be
C
is
D
may be
A new cinema _______ here. They hope to finish it next month.
#101290
A
will be built
B
is built
C
has been built
D
is being built
--- Hi, Kate, can I use your bike for a while this afternoon?--- Sorry.??__________?.
#103544
A
It’ s repaired?
B
It has been repaired
C
It’s being repaired?
D
It had been repaired
In the past twelve months the research members ______ the effectiveness of many materials in a home building.
#102889
A
had studied
B
would study
C
studied
D
have studied