______ almost all our time to our schoolwork in the past three months, we have almost no time for fun and play．
| A．Having devoted | B．Devoted | C．To devote | D．To have been devoted |
Some medicine, when wrongly____,can kill a person.
| A．take | B．taking | C．Taken | D．to take |
What terrible weather! It_____heavily for as long as eight hours.
| A．snows | B．snowed | C．is snowing | D．has been snowing |
His mother always keeps telling him to ______ his table manners.
| A．care | B．observe | C．mind | D．notice |
This is the very dictionary____which Mr. Smith came here the other day.
| A．by | B．for | C．in | D．on |
--How much salt did you put in the soup?
--- I’m sorry to say, ____. I forgot.
| A．none | B．no one | C．nothing | D．no |