Scientists in some countries have done a lot of work to _____ the moon.

When Peter __________ the car door, he found the key left in his carSo he had to call for help

37The boy is curious _____ everythingI am sure he is very clever

Thank you very much for your advice.— Not at all. Hope things ___________.

do it right now, and you _____ have my help when in trouble.