During the summer vacation, he just stayed at home, doing nothing at all, which _____ his failure in the first monthly examination.
| A．appealed to | B．accounted for |
| C．brought in | D．allowed for |
Bats are surprisingly long-lived creatures, some _____ a life span of around 20 years.
| A．having | B．had | C．have | D．to have |
I often think of those occasions ______ we had a happy time together.
| A．which | B．when |
| C．on which | D．Both B and C |
Every day _____a proverb aloud several times until you have it memorized.
| A．read | B．reading | C．to read | D．reads |
In April, thousands of holidaymakers remained ______ abroad due to the volcanic ash cloud.
| A．sticking | B．stuck |
| C．to be stuck | D．to have stuck |
— I’m afraid I can’t finish the magazine within the required time.
— _________.
| A．Please go ahead | B．That’s right |
| C．Not at all | D．Take your time |