—What ______the number of the students in your school?—About four thousand and seven hundred. A number of them ______ from the countryside.
---Middle schoolstudents hardly know anything about shopping online, __________ they? --- ________.It’s very popular with teenagers.
—Are you happy with your grades in the math exam? ---Not at all.I can’t have _______.
I have a ______ frienD. He has lived in the _____ island for half a year to do some research. A. close; aloneB. close; lonely C. closed; aloneD. closed; lonely
Madame Curie ___________ the honours that were given to her in her later years.
While I _________ a novel, someone_________ at the door.