look out of，what about，speaking of，go off，for example，burn up，have trouble in，fill in，wind up，in one's free time

（1）Do you know how much energy you will

burn up

burn up

during the relay race？
（2）

Look out of

Look out of

the window！It's snowing.
（3）If we all agree，let's

wind up

wind up

the discussion.
（4）

Speaking of

Speaking of

bicycle，some people think it has outdated in many big cities.
（5）Please

fill in

fill in

this form，giving your name，age and address.
（6）We often

have trouble in

have trouble in

using neutral pens because of its limited ink and other inconvenience.
（7）Prices have risen sharply.The price of vegetables，

for example

for example

，has risen by over 10%.
（8）The gun

went off

went off

and the bullet went flying over his head.
（9）I play tennis

in my free time

in my free time

.What about you？
（10）

What about

What about

going out for a walk after supper？