The expression on her face suggested that she ( ) glad to go shopping with me.
A. was
B. is
C. will be
D. should be
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Weather ( ) , we will go boating this afternoon.
A. to permit
B. permit
C. permitted
D. permitting
All parents worry about( ) their children are getting enough of the right foods.
A. how
B. when
C. whether
D. where
We are said ( ) in the Digital Age.
A. living
B. lived
C. to have lived
D. to be living
They discovered that some young plants make a clicking sound in their roots, which is so quiet that human are ____________ (able) to hear it.