Mike didn’t understand _______ made his wife so upset this morning.
| A．what was it that | B．what it was that | C．how that was | D．why it was that |
The reason ________ he didn’t come was _______ he was ill.
| A．why; that | B．that; why |
| C．for that; that | D．for which; what |
I’ve had enough of my boss. He is rather too hard ___________ me.
| A．for | B．at | C．on | D．in |
The foreign guests spoke highly of the children and their shows ___________ they saw in the kindergarten.
| A．what | B．who | C．that | D．which |
So far nobody has provided ______ hard evidence to support their claim that they have seen _______ UFO.
| A．an; a | B．the; the | C．不填；a | D．不填；an |
—sss，you haven't been acting like yourself．Everything is OK?
—.
| A．Sure, it is | B．I'm fine，thanks | C．That's good | D．It's a pleasure |