There are two main sets of Games — the Winter and the Summer Olympics, and both are held every four years on a _________ basis.
A．valuable B．former C．regular D．swift
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．InformallyB．PhysicallyC．Actually D．Rarely
