【題目】 It was so noisy that we hear ourselves speak.

【題目】I posted a book to her three weeks ago. She________have received it.

【題目】At the request of the director, he was ________for the part of a disabled youth in the film.

【題目】Thanks to Mr. Smith, the father and the son eventually ________ after ten years' cold relationship between them.

【題目】If steel is heavier than water, why are ships able to on the sea?

【題目】As you worked late yesterday, you________have come this morning.

【題目】______ for two days, Steve managed to finish his report on schedule.

【題目】We need to get to the root of the problem ________ we can solve it.

【題目】He________that he could finish the job without any help.

【題目】In that school, English is compulsory for all students, but French and Russian are _______.