`Ex 1:`
1.solar system
2.planet
3.Mars
4.Mercury
5.Jupiter
6.Neptune
7.Saturn
8.Venus
9.orbit
10.time-consuming
`Ex 2:`
1.B
2.C
3.D
4.B
5.A
6.A
7.C
8.B
9.A
10.D
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`Ex 1 :`
1.C
2.C
3.C
4.C
5.C
6.A
7.D
8.D
9.D
10.B
11.B
12.B
13.C
14.D
15.A
16.C
17.C
18.D
19.D
20.D
`Ex 2:`
1.so that
2.Although
3.in order to
4.xem lại đề
5.but
6.If
7.so
8.unless
9.In spite of
10.in case
`Ex 3:`
2.Although Nick used to smoke,he seems to be in good health.
3.No one thought we would win the championship but our team won by a large margin.
4.He was standing in the shadow so I could not see his face clearly.
5.We couldn't get tickets in spite of queueing for an hour.
6.Both Tom and An were late.
7.You won't learn to use a keyboard properly unless you practice.
8.The man spoke very slowly so that I could understand what he said.
9.We can leave either today or tomorrow.
10.You can use my car as long as you drive carefully.
`Go od luck!`
