When you communicate with people, it is not unusual to find yourself in a situation ____ you have to politely decline an offer.
| A．where | B．which | C．what | D．why |
Only by practising a few hours every day _______ be able to master the language.
| A．you can | B．will you |
| C．you will | D．can you |
_______ the people have become masters of their country _______ science can really serve the people.
| A．It is only then; that |
| B．It was that; when |
| C．It is only when; that |
| D．It was when; then |
—I would never come to this restaurant again.The food is terrible!
—_______.
| A．Nor am I | B．Neither would I |
| C．Same with me | D．So do I |
The old couple have married for 40 years and never once _______ with each other.
| A．they had quarreled |
| B．they have quarreled |
| C．have they quarreled |
| D．had they quarreled |
I just wonder _______ that makes him so excited.
| A．why it does | B．what he does |
| C．how it is | D．what it is |