The director worked so hard that he ________ won the best director award.

The general fought many hard battles and won countless medals, but he remains ______.

Study hard, ______ you won't pass the exam. A: or B: and C: but D: if

Study hard, ________ you won't pass the exam. A: until B: and C: but D: or

Work hard ________ you won't finally find the answer to the problem. A: and B: but C: or D: so

His hard work () when he won the prize. A: paid off B: showed of C: rang off D: kept off

But you have to study hard, (). A: mustn't you B: won't you C: don't you D: oughtn't

You must study hard if you ______ want to fail the exam. A: won’t B: don’t C: haven’t D: hadn’t

The purpose of the author's story is to tell us that ________. A: in the old days engineers had to work hard to succeed B: good engineers should always be practical C: sometimes hard work won't help you achieve your goal D: the road to success is never easy

What is special about open-access journals A: A higher frequency of citation. B: A collection of valuable data. C: Hard-won prominence. D: Established reputation.