单选题 —Carrying such a heavy backpack while climbing is quite a(n) ________! —But the water and snacks are all we’ll need.

单选题 没事儿 exercises every day. So he is always full of ________.

单选题 —It takes me a long time to carry out the experiment and I haven’t finish the report. —Take your time. You ________ finish it today. It’s fine if we hand it in tomorrow.

单选题 —Sorry, we can’t hear you clearly. Will you please ________ your phone number? —I’ll write it down.

单选题 ________ he had a good start, I made my effort to run after him at last.

单选题 The performance named YangBOT mixed traditional yangko dance with technology ________ .

单选题 We can do a lot to protect the environment. ________, change the way we travel.

单选题 —We should wear masks to care for ourselves and the people around us during the epidemic. —So it does. __________, life is the most important to everyone.