Can you go shopping with me tomorrow? —Sorry. I have to _____ my sick mother at home..

What’s the matter, Mary? You looked upset.— I failed again in my math exam. I’m really sorry because I don’t want to ____ my parents down.

There is a wire pole along the road _________ meter.

Jim works hard on his Chinese and .[ ]

What difficulty do you have the poor children from the poor village?