Why  are  you  so  happy?
----______my   mother   buys a new bike for me.
A. So     B. Because      C. But

Her grandparents are still in good health ______ they are over eighty.

Tom didn’t go hiking with his classmates ____ his illness.
A. because  B. because of   C. as

– _________ do you go to your school library?
– Three times a month

Mike didn’t go to bed         his father came back.

Although he was will,          his father came back.

Jim can’t go to school ___ his parents have no money.

I will visit my aunt ____I am free tomorrow. 
A if  B whether  C when  D after

My sister is only five, but she always tells me ____ my pictures are good or not.

He didn’t take part in the sports meeting, ___he hurt his leg.