Some people hold the view that the new machine isadvanced, while others are still skeptical _____ whether it is of practicaluse.

’t want to drive all the way to Shanghai by myself, so I ______ Henry, my American friend, to ride with me.

The train goes at 8 o’clock.I’m afraid I can’t . [ ]

You here half an hour earlier. It is a pity you missed the famous star. [ ]

May I smoke here—No, you ______. This is a no-smoking room.