15. If you go by ______train, you can have quite a comfortable journey, but make sure you get ______
22. Look at the timetable. Hurry up! Flight 4026 ______ off at 18:20.(A)takes (B)took (C)will be tak
23. —Mom, what did your doctor say?—He advised me to live ________ the air is fresher.(A)in where (B
28. At the foot of the mountain(A)a village lie (B)lies a village (C)does a village lie (D)lying a v