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Complete each pair of sentences with the same word.
1 a My teacher is going to __________ me how to solve the problem.
b It's a great __________ ! You should go and see it!
2 a You should __________ left here, not right!
b It's my __________ to cook dinner tonight.
3 a I’m going on a business __________ to Prague next week.
b Oh no, you've cut your knee! Did you __________ and fall when you were running?
4 a Some infections are easy to __________ with the right kind of medicine.
b I took him to a nice restaurant as a __________ for his birthday.
5 a What's on your __________ ? You look worried about something.
b It's not a problem if you can't finish all your work today. I don't ____