Question

求解必采纳！！！！！！

Answer 1

Sick children
Free of charge
Volunteer to do sth
Put off doing sth.
call on
Feel lonely
Learn about sth
go on travelling
At the same time
Be busy doing sth.
Pay attention to sb to do sth
make money
Looks like someone
Fix up
make sth possible
Answer the phone
A specially trained dog
Imagine doing sth.
Have strengths in sth
Fold the clothes
No problem
Stay out late