Dad, science is too hard for me.—Oh, dear, if you keep listening ________ in class and do enough exercises, you’ll find it easy.

The old woman who _____ in the deserted house alone for ten years has been settled ina nursing home now.

What are you doing—I’m_____my English book.

Mr. Wang _______drive to work, but now he _______there by bike to keep healthy.

What can I do for you, Madam–I’d like ________, please.