Could you tell me something about the virus, Dr. Smith — Sure. It _____ via the bloodstream and causes ill health in a variety of organs.

__ to an Australian home,you will probably eat outside and cook meat on the open fire.

Can we finish our task by the weekend?— It all depends on ______ we can get MrSmith’s cooperation.[ ]

I still remember my first teacher________ we haven’t seen each other for a long time.

Each member country of WTO must_____its laws and regulations and complete on the principle of fairness and cooperation. [ ]