May I borrow your pen, Mike ? —-Yes, of course. Here are some and you can take ______ of them.

I’ll invite you _____my house _____dinner.[ ]

The workers in HuaShan Mountains have torubbish to keep the mountains clean.

Be careful . You _______ cross the road when the traffic light is red . The traffic is heavy at this time of day .

Did you have breakfast this morning? —No, I got up late and went to school_____ breakfast.[ ]