I_____ violin lessons every two weeks, but I think I will make it every week from next month.
#104449
A
am having
B
have had
C
have
D
have been having
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Ladies and gentlemen, please fasten your seat belt. The plane __________. 
#102320
A
takes off
B
is taking off
C
has taken off
D
took off
—What were you doing when she dropped in? —I for a while and_________ some reading.
#104243
A
was playing; was going to do
B
played; did
C
had played; was going to do
D
had played; did
The football match will be put off ,if it______.
#102413
A
will rain
B
rains
C
rained
D
is raining