2. Another grand bridge will be built _____ the Pearl River in our city.
______more effectively with foreign firms, many Chinese firms have turned to new technology.
Those books ______ in brown paper are for the kids so that the kids will not easily tear them up.
You ______ regret all your life if you drive after you take some wine, I tell you.
.______ he works hard, I don’t mind when he finishes the experiment.
—How long are you staying? —I don’t know.______.