—Mr. Smith, why are you always asking me to do the difficult work?—Because you _______ do such a thing and nobody else is fit for it.

—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?—________ my students have a try?

What he said at the meeting made Mary rather embarrassed, so he felt that he ______ differently.

It is impossible to please everyone. We can only do our best.

How dangerous! She was driving the car with one hand and holding an ice cream with ____.