.Too much drinking and smoking ________ his early death. Which of the following keys is wrong?

They tell us some ways _________English well.

Do you know what Tom does all day? —I know he spends at least _______ time watching TV as he does spend doing his lessons.

The poor ________ living in the mountain ________ top is covered with green trees.

don’t want to express any opinions on the plan until it has been _________.