The fog was so heavy this morning that drivers could hardly _______ the things just ten meters away from them.

33—I’m sure the Mexican Government will control the outbreak of theH1N1 flu in a very short time Do you think so—Yes _______

It remains doubtful whether the project_____________ next month will bring profits to the company.

Whose advice doyou think I should take — __________.

I enjoy learning English ________ it takes me a lot oftime.