1— Tommy, do you know ifFrank ______ to the zoo this Sunday if it _______— Sorry, I haveno idea.

Mrs Chen,almost sixty,is always________and doesn’t look tired at all.[ ]

With the help of the English teacher, he has made in his English writing.

I’m very grateful for your help and hopethat someday I may be able to do something for you___．[ ]

r, at times this balance in nature is disturbedby human activities, _______ a number of possibly unforeseen effects