—Who has taken my pen away?—__________. He was here a moment ago.  
#90019
A
It must be Li Ping
B
It is Li Ping take
C
Li Ping is
D
Li Ping must take
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 Thank you for all your hard work last week. I don’t think we ______ it without you.
#87231
A
could have managed
B
can manage
C
could manage
D
can have managed
I was ill that day, otherwise I ____ the sports meet
#86851
A
would have taken part in
B
took part in
C
had taken part in
D
would take part in