His sister left home in 1998, and_______ ever since.
#102075
A
had not been heard of
B
has not been heard of
C
had not heard of
D
has not heard of
推荐题目
Because of my _____ English, I can’t make myself _____.
#103335
A
broken; understood
B
broken; understand
C
break; understood
D
breaking; understanding
Although the causes of cancer_____, we do not yet have any practical way to prevent it.
#104936
A
are being uncovered
B
have been uncovering
C
are uncovering
D
have uncovered
Since I won the big prize, my telephone hasn't stopped ringing. People ____to ask how I am going to spend the money.
#104012
A
phone
B
will phone
C
were phoning
D
are phoning
——What’s that noise?——Oh, I forgot to tell you. The new machine ______.
#103929
A
was tested
B
will be tested
C
is being tested
D
has been tested