If by any chance someone comes to see me, ask them to leave a________.

The doctors must get there in half an hour. There should be no____ in sending the blood to the dying girl .

The lecture that Mr Chen made this morning gave a strong ___________ on the students.

He is__________as a leader but he hasn’t__________in teaching.

These natural disasters have warned us that everyone should start to protect the_________ immediately.

Cloning an animal is a complex ________ that can go fatally wrong at any stage.

My ________ of this weekend’s activity is going out with some good friends.

________, Henry studied even harder after he entered the university.

The lecture that Mr Chen made this morning gave a strong ___________ on the students.

It is said that the World Golf Championships (世界高尔夫球锦标赛) to be held in Shanghai will be ______ on TV.