Frank put the medicine in a top drawer to makesure it would not be _______to the kids.

_____ he has done it is surprising._____ he has done is surprising.

Would you like to go and see Monsters University (《怪兽大学》) with me tonight—I’d love to, but I ______ it twice.

The salesman showed her several MP3s and she chose ________ one as she didn’t want to spend too much money on it.

Mum, I have a bad headache. I feel terrible.—Oh, dear! You must get a cold. You’d better see ___________ after breakfast.