How many workers are there in your factory, Mr Brown—________ workers in our factory _________2000.

下列各句中，加点字解释正确的一项是

You needn’t have come in person — a letter _____enough.[ ]

－MrSmith , I’m sorry I used your telephone when you were away this morning .－____________ .

Mr. Smith got to ______ there was once an old temple.