AIDS is spreading all over the world at shocking speed. Where its dark _______ appears, we see pain, tears and death.

The natural _______ of the mountains is beautiful.

I keep medicines on the top shelf, out of the children’s________.

Always read the       on the bottle carefully and take the right amount of medicine.

He presents a new _____ to learning a foreign language, which I think is of great value.

I tried to persuade him to give up the foolish idea, but in ________, and now he begins to regret.

The police always take ________ of dogs’ sharp sense of smell to search for the survivors in the earthquake.

Life is tough in the city. In order to lose their_______，some people drink alcohol.  

There’s no_____from my bedroom window except for some factory chimneys.

It is said that dogs will keep you _________for as long as you want when you are feeling lonely. 

The top leaders of the two countries are holding talks in a friendly______

School children must be taught how to deal with dangerous ________ .

In this experiment, the famous professor showed three different____ to the study of physics．

If we keep wasting so much energy, _____are that our oil wells will dry up and the environment will be destroyed.

Such a magazine has＿＿＿＿＿except when you have time to kill．

The boy wrote＿＿＿＿＿last week．

We have worked out the plan and now we must put it into＿＿＿．

Opinions of that kind are best kept to yourself, and not voice＿＿＿＿＿．

Four years had passed, and I found Mary had＿＿＿＿＿．

Tom’s and John’s＿＿＿＿＿came to London last week．