There are about _______________ students in our school.

the washing up has been done!— That ______ Cynthia．She’s always helpful.

You got back so late and you didn’t even give me aproper reason _______ you hadn’t called me! I’m very unhappy with you.

Would you like to go the football game tonight—Oh, sorry. I _______ to see the film So Young.

There is clear evidence _____ smoking does harm to our health