I. Choose the correct answer to complete the sentences. 1. Nam didn't know________ to find more information about the course. A. what B. why C. where D. while 2. He asked________ it was too early to apply for the course. A. if B. for C. when D. that 3. I couldn't sleep last night________ the bar nearby played music so loudly. A. although B. so that C. while D. because 4 .______they moved to the city five years ago, they still remember living in a small town. A. Although B. Whereas C. While D. In order that 5. The students didn't know________ to do to deal with the problem. A. where B. when C. why D. what 6. Lots of people choose to buy houses in the suburbs_________ they can avoid the noise and pollution in the city. A. although B. when C. so that D. so as 7. Minh is ________the most successful student in my class. A. so long B. by how C. by far D. so now 8. My grandfather is the____ oldest artisan in the village; Ngoc's grandfather is the oldest. A. first B. second C. most D. one 9. ________I was talking to my teacher, my friends were waiting outside the classroom. A. In order that B. While C. Although D. So that 10. Lan couldn't decide ________to work with on the project. A. who B. what C. how D. when