1 Mai studies hard for the exam so she could have good marks
2 We need an umbrella since it is raining heavily outside
3 Nick will visit some craft villages after he finishes the Vietnamese course
4 We decided to go for a walk in the park even though it was very cold out
5 Because the tourists wanted to buy some silk, they went to Van Phuc village
6 They won't buy the new car until they save enough money
7 Take an umbrella with you in case it rains
8 They were reading while their mother was watching TV
9 He had checked every door before he went out today
10 I took a bus home instead of walking as it was getting every dark
