【单选题】I am afraid that the train will be crowded during the holiday.
【单选题】I am afraid that the company dogged it from the deal at the last second.
【单选题】I am afraid that the tape you lent me yesterday is ______.
【单选题】I am afraid that the _________ between rich and poor is still widening in our country.
【判断题】使材料丧失正常工作能力的应力称为破坏应力。