E-shopping, when properly _____ ,can save us a lot of time and energy.

While he         in Europe, he        some photographs of many universities.

As soon as we went       the ship, it left port.
aboard         B. to aboard           C. abroad            D.  board

I’m tired out．I stayed up the whole night, ______ for my midterm math exam．

Don’t sit there       nothing. Come and help me with this table.

Pleasant as they made it ______ in Jiuzhaogou, we felt tired after the long journey.

After ________________ a sandstorm warning on Sunday evening, meteorologists forecast that dusty weather will continue in parts of the country on Monday.

I still remember ____ to the Summer Palace and what I saw there.

The dining room is clean and tidy, with a table already ______for a big meal．

This kind of material can be used to _____plastics.