I. Choose the best answer A, B, C or D to complete the sentences:
1. In some areas, when you meet old people, you _______ take off your hat to greet them and show your respect.
A. should B. shouldn’t C. don’t have to D. have to
2. Lang Lieu couldn’t buy any special food ________ he was very poor.
A. although B. when C. while D. because
3. Mary adores ________ with her best friend, Susan during the weekend.
A. to hang out B. hang out C. hanging out D. to hanging out
4. Tet is an occasion for family ________ in Viet Nam.
A. visiting B. meeting C. seeing D. reunions
5. People in the countryside live ________than those in the city.
A. happy B. happily C. more happily D. less happy