The number of students in our school _________ 4000 and a number of them _______ good at playing pingpong. A. is, is B are, are C. is, are D. are, is
Mary often gives us _____ by email.
_____ your sister _____ playing the piano these days?
The news I am going to tell you _____ very surprising.
I don’t know _____ tomorrow. Can you tell me?
My father didn’t go to bed ______ he washed his car last night.