I think it’s good _____ us _____ eat healthy food.A. for ; to B. for; for C.to; for
—We’d like you to start work tomorrow if possible.—I’m sorry, but I can’t possibly start until Monday. _______?
Children found the lecture so hard _______that they felt sleepy.
_______,when Marx was already _______,he found it was important to study the situation in Russia, so he began to learn Russian.
—We can not bring any snacks at the sports meeting.—_______.
It was _______ problem that _______ of the students could work it out.