_________I borrow your lighter for a minute?—Sure, no problem. Actually, you _________keep it if you want to. I’ve given up smoking.

Can you give me a hand?—Sorry, I can’t help you do this because it is ______ my ability.[ ]

have you been studying English?-For about 2 years. [ ]

Where is Jack? —-On the playground. He _______ football with his classmates.

How much are these pants? –_______ twenty dollars．．