---He lost his job last week, but he seems happy.---I think he _____ to put on a brave face.
#100394
A
is trying
B
tries
C
tried
D
has tried
推荐题目
 When I first met Doris I didn’t like her, but I ______ my mind.
#99777
A
have changed
B
change
C
had changed
D
would change
--How did she get infected? --She ________the virus without any protection.
#100265
A
exposed to
B
had been exposed to
C
had exposed to
D
was exposed to