Don’t turn off the computer before closing all programs     you could have problems
#86872
A
or
B
and
C
but
D
so
推荐题目
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
My little son _____ out alone at night. 
#88107
A
dares not go
B
dares not to go
C
dare not to go
D
doesn’t dare to go