Anna, you look so tired and wet all over!—Well, you know, all morning I _______ my books tomy new office on the third floor.

The medical team, three doctors and two nurses,_______ for the mountain area yesterday.

Tom, why not stop _________ a rest— Oh, no, mum. It’s so interesting that I can’t stop _________ the kite.

Rubbish will be made use of _______ light after thiskind of new machine is invented. [ ]

ng it is, an astronaut’s superior position is filled with potential danger.