How long do you think it will be ______ another e-commerce giant comes out to exceed Alibaba?
| A．when | B．before | C．since | D．until |
________ some of the orange juice and perhaps you will like it.
| A．Trying | B．Try | C．To try | D．Have tried |
If you ________ Beijing Duck，I'd like to treat you to a meal at a famous duck restaurant．
| A．didn't try | B．don't try | C．haven't tried | D．hadn't tried |
—Shall we meet tonight?
—Sorry, I’m busy. How about________ day?
| A．every other | B．the other | C．any other | D．some other |
We left the meeting, there obviously __________ no point in staying.
| A．were | B．being | C．to be | D．having |
_________ expressing her love for you, my sister has also expressed mine.
| A．In | B．On | C．At | D．Beyond |