In 2000, we ____ to the Great Wall and had a good time there.
#39480
A
go
B
went
C
will go
D
have gone
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– Look at these factories. I hate them. They____ many rivers here. --Yes. Something ______ to stop the pollution.
#39701
A
polluted, must do
B
had polluted , must be doing
C
have polluted , must be done
D
were polluting, must be done
My father _________to South Hill．He______ there for 5 days．
#39925
A
has gone：has been
B
has been; has gone
C
has gone；has gone
D
has been；has been
--- you having supper at this time yesterday?---No, I was .
#40087
A
Are; having a rest
B
Were; read a book
C
Are; watching TV
D
Were; singing