sparing no efforts to create ______ morepeaceful and more advanced world, ______ place where everyone enjoy his lifeand freedom

It’s difficult to get to the other side of the river．—I think a bridge ________ over the river．

I often do my homework ____ the computer.

I carried the bowl with both hands________, so that Iwouldn’t break it.

What time is it It’s eight o’clock.