_________ time and labor, cartoonists generally draw the hands of their characters with only 3 fingers and a thumb．
| A．To save | B．Saved | C．Saving | D．Having saved |
To tell the truth, if it were not for the fact that youmy daughter, I would not take such pains to serve you.
| A．were | B．had been | C．are | D．have been |
we are laid off, all of us will have to be retrained and improve ourselves.
| A．Unless | B．So that | C．Until | D．In case |
-----Is this the first time youQuanzhou?
-----No. But the first time Ihere, the city wasn’t so beautiful.
| A．visited; came | B．visited; have come |
| C．have visited; have come | D．have visited; came |
After months of voyage, Columbus arrived in what laterto be a new continent.
| A．had been proved | B．was proved | C．had proved | D．proved |
we can’t remove our troubles in life forever, we can leave them behind when we are on vocation.
| A．When | B．While | C．Unless | D．Until |