Scientists are convinced_____the positive effect of laughter_____physical and mental health.
| A．of; at | B．by; in | C．of; on | D．on;at |
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We' ve published large quantities of books. This year___ we've published three million.
| A．only | B．just | C．alone | D．merely |
--- Haven't I told you that I like the beef well done?
---Yes, but I _____ it longer than I usually do.
| A．was cooking | B．will cook | C．cooked | D．had cooked |
_____ good, these cookies sell well.
| A．Smelled | B．Smelling | C．Being smelled | D．To smell |
What ______ public is concerned about is whether medical workers and scientists will be able to find for this new disease in a short time.
| A．不填;不填 | B．不填;the | C．the;不填 | D．the;a |
You can’t imagine that a well –behaved gentleman ______ be so rude to a lady.相关知识点
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