The last time we had great fun was __________ we were visiting the Water Park. 
#31952
A
where
B
how
C
when
D
why
推荐题目
________, the car stopped all at once.
#31625
A
Seeing a boy lying on the ground
B
On seeing a boy sitting on the road
C
The driver saw a boy standing on the road
D
The minute the driver saw a boy seated on the road