31. A.told to ---> bỏ to
32. B.fluent ---> fluently
33. They have ever been to the Philipines, haven't they?
34. Nam said we were learning English at the moment.
35. Em không biết làm
36. This letter must be answered immediately by us.
37. I wish I had a bicycle
38. Cuong will be a famous teacher in the future.
39. Though it rained yesterday afternoon, we played soccer together happily.
40. Em đang ngồi xếp, xíu xếp xong em trả lời cho anh nhá