---Peter, where did you guys go for the summer vacation?
---We _______ busy with our work for months, so we went to the beach.
| A．were | B．had been | C．have been | D．will be |
---- I am not able to solve some practical problems using Newton’s First Law of Motion.
----That’s just _______ most of the students are puzzled easily.
| A．what | B．why | C．how | D．where |
—What should we pay more attention to if we go out for a mountain camp.
—Nothing special. Take a special pair of glasses ______the wind there is strong and cold.
| A．now that | B．in case | C．providing that | D．so long as |
—What should we pay more attention to if we go out for a mountain camp.
—Nothing special. Take a special pair of glasses ______the wind there is strong and cold.
| A．now that | B．in case | C．providing that | D．so long as |
I didn’t understand ________led him to be late for three times every week.
| A．what it was that | B．it was where that |
| C．how it was that | D．why was it |
_______ made me angry was that it never______ her that her parents might be worried.
| A．That; happened to | B．What; occurred to |
| C．What; belonged to | D．That; meant to |