Mr. Smith, who often helped passers-by repair their bikes, said that what he did was not paid but ______

Mr. Smith, who often helped passers-by repair their bikes, said that what he did was not paid but _______.

#10771

relevant

optional

suitable

voluntary

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 I know that it will be difficult to pick him out in such a crowd, but if you ________ happen to see him, give him this packet.

#11078

would

might

should

could

Christmas is around the corner. Let’s make some _______ for it.

#14442

contributions

achievements

preparations

congratulations

Experts said it was       that Malaysia Airlines Flight 370(马航370) had changed course and turned back toward Kuala Lumpur(吉隆坡).

#10896

obvious

extinct

successful

energetic

The suggestion, ____ by the locals, proved to be a very constructive one.

#12292

put down

put forward

put out

put off

 Teachers words and deeds always _______ a great effect _____their students.

#13184

have, on

give, to

make, on

take, to