The kidney transplant operation was _____ complicated, so the operating team had to take special care to ensure its success.

（ ） we have all the materials ready, we should begin the new task at once.

He is the sort of businessman who would do anything in his （ ） of profit.

Do you feel like_____today?

Space vehicles were launched into outer space_____search of another living planet.

John Smith, a diligent student, never refuses to （ ） more responsibilities that are assigned to him.

Many students thought about the third question for quite a while and had great difficulty answering it. Obviously, it was _____ all.

I recognized John （ ） he entered the room.

Thank you for your letter of May 6, in which you _____ about the bicycles of Model 897.

____________ , we will review all the lessons before the final exam.

We mention the importance of giving up smoking once and again, but hardly ______ it.

Our company’s service is （ ） in nearly 80 countries around the world.