单选题 The actors have to ______ before they appear in front of the audience.

单选题 _______ students often find it difficult to live in China at first.

单选题 Don't take him for a friend; he's ______a bully.

单选题 The rain was heavy and ______the land was flooded.

单选题 The aircraft vanished without ________.

单选题 Some people consider it unwise to ______themselves in a quarrel between husband and wife.

单选题 I was ________ than angry when I saw how they'd ruined the landscape.

单选题 What a pity! He ______the only chance of success.