If he ________harder , he will catch up with us soon .
#38550
A
study
B
studies
C
will study
D
studied
推荐题目
.Keep doing it, and you ______healthy.
#37425
A
being
B
were
C
are
D
will be
 He will send me a message as soon as he _________ in London.
#38267
A
arrived
B
arrives
C
will arrive
D
is arriving
His mother, with his aunt ____ now. 
#40696
A
are doing shopping
B
is doing shopping
C
do shopping
D
does shopping