64.It will be impossible for them to come on Saturday
make possible+for s.o+To V+....
65.Their father took a taxi to go to London last Monday
took a taxi=by taxi: đi bằng taxi
68.Nam and Quang are the same age
69.It is very good to learn English
It is very good/important/...+to V+..
70.We go to school by bike every morning
by bike=cycle: đi bằng xe đạp
71.What is the length of the river?
length là danh từ của long
What+is+the+N+of+sth+..?
72.We don't live near our school
not near=far away: không gần, xa
73.She went to France by plane last year
fly=by plane: bay máy bay
74.She can speak English to his teacher
be able to=can: có thể
75.Don't forget to lock the door before you leave
not forget+to V