Câu 31: Large commercial fishing boats are equipped to clean, packaging and freeze the fish. A. freeze B. commercial C. packaging D. are equipped Câu 32: They asked me how much time did I spend surfing the web a day. A. a B. asked C. how much D. did I spend Câu 33: The bottles of water is empty, so we will fill them up tomorrow. A. of B. them C. so D. is Câu 34: Yesterday morning, while I walked to school with my friends, it began to rain heavily. A. walked B. with C. to rain D. morning Câu 35: The students felt very happily when they knew that their exam result was great. A. happily B. their C. The students D. knew