单项选择题 （） aeroplanes in this company are Boeing planes.

单项选择题 You must （）your bad habits.

单项选择题 Mary is not here. She （） to Paris.

单项选择题 This question was （）difficult that no one could answer it.

单项选择题 Hurry up，（）you’ll be late.

单项选择题 Don’t talk（）that.