A high-tech exhibition ________in the National Museum now. Let’s go and visit it.
--You ought to have given them some advice. --________, but who cared what I said?
My grandpa transplants some trees to his garden ________ it is the best time for them every year.
The weather ________ be very cold at times, though it’s usually warm in spring in my home-town.
--why don’t we choose that read to save time? --The bridge to it ________.
Many people in the west make ________ a rule to buy Christmas presents for their relatives and friends.