This morning your mobile phone was always busy. I couldn’t ________ to you until several attempts.—Oh, I’m sorry. I was discussing the price of our products with a client over the phone.

Once ____, Mount Tai will never beforgotten.

In our country the cold weather in the north_____ sharply _____the hot weather in the south.

Would you like me_____ the radio a bit?— No, it’s all rightI’m used _____ with the radio _____. [ ]

The form cannot be signed by anyone _____ yourself.