This is not an economical way to get more water; ____, it is very expensive.

Across the bridge and _______a vast carpet of green land stands the King’s college, the largest and most beautiful building in Cambridge.

He handed in the essay two days later than his classmates，but it was still _____the time limit set by the teacher.

The great success of this program has been largely _____  the support given by the 10 local business men.

You shouldn’t have quarrelled with the customs official. ________ helping the situation, you just made it worse.

The big building _____ construction will be a shopping mall in the city.

She's aiming ________ a scholarship. That is why she has been focusing her mind ________ her work.

David was extremely excited at the good news that he would get a chance to the Rock Club to see the great man he admired ___________.

Jane helped me with my work last week when I asked for leave. ______, I’ll invite her to have dinner with me.

Tom was over there. His red clothes stood out clearly _____the snow.