A cool rain was falling_________with snow causing heavy traffic．
A．mixed B mixing C．to mix D．having mixed
My mother always tells me ______ out alone at night.
| A．go | B．not go | C．not to go | D．don’t go |
There is a growing_____of interest between her position and her business activities.
| A．demand | B．concern | C．awareness | D．conflict |
—Can I pay the bill by check?
—Sorry,sir.But it is the management rules of our hotel that payment ____ be made in cash.
| A．can | B．will | C．shall | D．may |
I am really worried about _____ I have hurt his feelings, though I didn’t mean to.
| A．whether | B．what | C．if | D．how |
The reason ____ their failure you know is _____ they didn’t get fully prepared for the experiment.
| A．why; that | B．that; why | C．for; that | D．why; because |