—Do you know _______ the Capital Museum? —Next Friday.
A. when will they visit B. when they will visit
C. when did they visit D. when they visited
Granny often tells us _______ water in our daily life.
A. save B. saving
C. to save D. saves
—What _______ the number of the students in your school?
—About two thousand. A number of them _______ from the countryside.
A. is; ,are B. is; is
C. are; is D. are; are
Hurry up! Once the concert starts, nobody _______ to enter the concert hall.
A. allows B. allowed
C. is allowed D. is allowing
Your dream will come true _______ you put your heart and soul into it.
A. if B. unless
C. although D. until
—Could you please have a walk with me?
—Sorry, I _______. I have something important to do now.
A. mustn’t B. needn’t
C. can’t D. may not
