Câu 16:
Yesterday Hoa and Lan__________ round West Lake. It took them an hour.
A.
cycle
B.
cycles
C.
cycling
D.
cycled

Minh used to__________ his homework late in the evening.
A.
does
B.
do
C.
doing
D.
did
Câu 17:
Minh used to__________ his homework late in the evening.
A.
does
B.
do
C.
doing
D.
did

If people __________ the rules, there are no more accidents.
A.
follow
B.
take care of
C.
obey
D.
remember
Câu 18:
If people __________ the rules, there are no more accidents.
A.
follow
B.
take care of
C.
obey
D.
remember
Câu 19:
You should__________ right and left when you go across the roads.
A.
see
B.
look
C.
be
D.
take
Hurry up or we can’t__________ the last bus home.
A.
keep
B.
follow
C.
go
D.
catch
Câu 21:
There used to be fewer people and __________ on the roads.
A.
roofs
B.
helmets
C.
helicopters
D.
vehicles