I
1.to-by-by
2.in-in
3.in-in
4.in-at
5.in-at-learn
6.between
7.in-at
8.by-the
9.in-by
10on
11.in
12.on
13.at
14.in
15.in-in
II.
1 It is raining heavilly now. You should stay at home and read books
2 What are you doing at the moment? - I am writing an essay
3 Where Lan and Ba going tomorrow ? They'll visit the Museum.
4 You'll have geography next friday
5.What aboutplayinggame of chess?
6. It takes her 10 minutes to make this toy.