With a large amount of work , the chief manager couldn’t spare time for a holiday.
| A．remained to be done | B．remained being done |
| C．remaining to be done | D．remaining to do |
The __________ to the rocket going into space went wrong, and as a result it exploded and fell into the sea.
| A．mark | B．sign | C．symbol | D．signal |
Put the cleaned fish in a mixture of 300g of salt and one liter of water to ________ all of the blood from the fish meat.
| A．replace | B．remove | C．calculate | D．spoil |
We give dogs time, space and love we can spare, and ____________, dogs give us their all.
| A．in charge | B．in fact | C．in case | D．in return |
Barbara has worked here for three years, so I’m sure she’s quite ______ to the task.
| A．equal | B．fair | C．worth | D．informal |
—Do you think it’s a good idea to make friends with your students ?
— ___________, I do. I think it’s a great idea.
| A．Informally | B．Physically | C．Actually | D．Rarely |