－Why does the river smell terrible? －Because the water_______.
#42170
A
was polluted
B
has been polluted
C
will be polluted
D
has polluted
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---I called you yesterday evening, but there was no answer. ----- Oh, I’m sorry. I _____ dinner at a restaurant at that time.
#41871
A
have
B
had
C
was having
D
have had
--Where were you at 7:00 last night? -- I to my mom at home.
#41737
A
write
B
was writing
C
wrote
D
am writing