A balloon as it is filled with air.
#102647
A
is increased
B
increases
C
expands
D
is expanded
推荐题目
----- Have you ever visited the 2010 Shanghai World Expo? -----Yes．When I was in China , I ______ it twice．
#103152
A
have visited
B
visited
C
had visited
D
would visit
－Have you known the exam result?－Not yet. I guess the paper ________ by the teacher now.
#99364
A
has graded
B
is graded
C
is being graded
D
is grading
George said that he would come to school to see me the next day, but he ______.
#102153
A
wouldn't
B
didn't
C
hasn't
D
hadn't
The witnesses(证人) of the accident said that the lorry _______ very fast at the crossroads when the accident happened.
#103449
A
is traveling
B
had travelled
C
was to travel
D
was travelling
Had it been possible, I would have gone to attend Monica in the hospital, but I fully occupied last month.
#101541
A
had been
B
was
C
am
D
have been