He was busy writing a story，only _________ once in a while to smoke a cigarette．
#98279
A
to stop
B
stopping
C
to have stopped
D
having stopped
推荐题目
They decided ___ the procession, but they were not permitted to.
#98692
A
taking part
B
to take part
C
taking part in
D
to take part in
His mother always keeps telling him to ______ his table manners.
#96961
A
care
B
observe
C
mind
D
notice
By the year 1889, there were just 541 bison ________ in the whole of North America.
#97227
A
leaving alive
B
to leave alive
C
to be left alive
D
left alive
With all the novels he was interested in _______, he left the library and went back to his dorm.
#97728
A
borrowed
B
borrowing
C
to borrow
D
borrow
When we visited my old family home, memory came __________ back.
#92723
A
flooding
B
to flood
C
flood
D
flooded