（ ） the obvious differences in size and population, the states of America have many things （ ） common.

All _____ is peace and progress.

（） you decide to take up, you should try to make it a success.

Many young people find it harder to appreciate_____music than pop music.

The sales manager had his secretary _____ a press conference for their new products.

（ ） we can succeed or not depends on how well we cooperate with others．

If I had remembered （ ） the window, the thief would not have got in.

Realizing that he hadn’t enough money and _____ to borrow from his father, he decided to sell his watch.

If you don’t agree with me, （ ）.

I think it’s high time we _____ strict measures to stop pollution.

Scientists say it may be five or six years （ ） this medicine is tested on human beings.

These tickets for the performance are （ ） until the end of the month．