British adventurer and swimmer Lewis Gordon Pugh became the first person to swim in the icy waters of North Pole，to raise awareness of how global warming ______ the polar ice cap.
#104351
A
had affected
B
is affecting
C
affected
D
will affect
推荐题目
The vegetable looking fresh in his field ______well. It’s often sold out immediately it appears in the market.
#102519
A
has sold
B
has been sold
C
is sold
D
sells
I ________ while reading the English textbook. Luckily, my roommate woke me up in time!
#104783
A
had fallen asleep
B
have fallen asleep
C
fell asleep
D
fall asleep
It is bad manners to ________an invitation without a reason.
#99896
A
break down
B
settle down
C
turn down
D
calm down
Up to now, they _________ a good way to solve that problem.
#102584
A
didn’t find
B
can’t find
C
hadn’t found
D
haven’t found
When I met him the other day, it was the first time we ____ each other since we were at school.
#102641
A
saw
B
hadseen
C
wereseeing
D
haveseen