lead to；by bike；amusement park；put up；have a good time；make progress；a couple of；hear of

（1）—How do you go to work every day？
       —

By bike

By bike

.
（2）—How about going to a（n）

amusement park

amusement park

？
       —That's a good idea!
（3）If you have any questions，please

put up

put up

your hand.
（4）—Please tell me something about the accident.
       —The driver's carelessness

led to

led to

the accident.
（5）We were

having a good time

having a good time

swimming in the river when it began to rain.
（6）Zhang Jian

has made progress

has made progress

in his math.His teacher and parents are happy.
（7）We were happy when we

heard of

heard of

the good news.
（8）

A couple of

A couple of

old people exercise in the park every day.