—Long time no see. Haven’t you graduated from college?—Yes. I _______________Social Science for 4 years in Shanghai.
According to a new study by a French university, learning ______ second language can lead to ______ increase in your brain power.
Their classroom is _____ than ours, that is to say, their classroom is as small as ours.
It was _____ it raised so many difficult questions _____ the book took a long time to come out.
It is sometimes of great _____ to explain to the patient what is happening.
The failure of his plan made him _____ that he had made a great mistake in working out the plan.