They enjoyed fresh watermelon last fall because they______ watermelon seeds in the spring. 
#87818
A
were planting
B
would plant
C
have planted
D
had planted
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We ________ such great achievements without your efforts. Thanks a lot.
#87483
A
can’t have made
B
couldn’t have made
C
were unable to make
D
are unable to make
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
 Look! If we had begun to do the work yesterday morning, we _______ ourselves just like them.
#87236
A
would have enjoyed
B
were to enjoy
C
should enjoy
D
would be enjoying
Nathalie suggested the problem worth paying attention ______ at the meeting.
#86723
A
to be discussed
B
to been discussed
C
being discussed
D
be discussed