Food safety is one of the problems now all over the world.
A．discussed B．to be discussed
C．being discussed D．having been discussed
What worried me most was to go abroad alone
A．my not allowing B．having not allowed
C．my being not allowed D．my not being allowed
When seeing the snake, she a scream.
A．gave out B．gave away C．let go D．let out
No matter how bright a talker you are, there are times when it’s better silent.
A．remain B．to remain C．having remained D．to be remained
It is requested that each of the teachers invited a performance at the party.
A．should give B．will give C．has to give D．must give
When for his view about his teaching job, Philip said he found it very interesting and rewarding.
A．asking B．asked C．having asked D．to be asked
