What a day! It is quite hot today. — _____. Let’s go swimming. [ ]

Which is the _______ way to Qingdao, by plane, bus or train?

Why is online shopping getting more popular? —I think it _________ save a lot of time.

An e-mail_____ lots of e-mail English starts to look_____ secret code.[ ]

_______yogurt do you need? -Three cups．