Not until quite recently _____ any idea of what a guided rocket is like.

I got so tired that I just couldn’t move a step _____.

Once you arrive in a new place, you’d better （ ） the local custom.

（ ） my delight, our school football team won the game easily.

Such problems （ ） air pollution and traffic jams are becoming more and more serious in some big cities.

Tom might not have made such a serious mistake if he _____ your advice.

The tall tree, （ ） leaves are darker than those of the other two, is as old as grandpa.

Richard is American, John is British—they have different （ ）.

It was in Johnson’s hotel （ ） the business meeting was held last year.

So, （ ）, we’ve got to try further funding.

（ ） I admit that she has shortcomings, I still like her.

Visitors from the US have increased （ ） 8 percent since last year.