“____ does your pen friend say in hisletter” “He likes China a lot.”

Let’s have a game of tennis; the loser hasto treat the other to a hot dog．—.

Gun control is a subject _______ Americans have argued for a long time

下列各句加横线成语和熟语的使用，恰当的一句是

When Lincoln was young , he helped his father ___ the farm