Many students signed up for the _______ race in the sports meeting to be held next week.

Have you seen the film Under theHawthorn Tree—-Of course, I have. It was in ourvillage _____ it was made.

She looks very busy . I want to help her ,but I don’t know ___________ .

在文中横线处填入下列语句，衔接恰当的一项是（ ）如果有黑洞撞向地球，那么________。当然，你听到的不是声波，而是引力波，因为________。当黑洞靠近时，引力波会“挤压”内耳骨，产生类似照相机闪光灯充电时发出的咝咝声。尽管天文学家认为，________，但正常情况下，________，因为引力波在广袤的宇宙中经过长途跋涉，抵达地球时强度已大大减弱。①引力波每时每刻都在影响着我们 ②你会听到它悄然逼近的声音 ③引力波是听不到的 ④声波在真空中无法传播

Don’t be afraid of new words. You can in the dictionary.