填入下面文段出空白的词语，最恰当的一组是（ ） ① 探索半人马座α星目前是科幻， ② 不排除人类科技进一步发展后，未来可以实现这种设想， ③ 那也只是将来时。从眼下的现实来看，霍金能提山这种想法完全依赖于现有科技的发展和现实水平。具体而言， ④ 霍金要表达各种思想和学说，包括人类探索半人马座α星， ⑤ 必须要依赖他不可须臾离开的轮椅。轮椅 ⑥ 是霍金的代步工具，更重要的是，有了它，霍金才能与他人交流并表达自己的思想，包括目前探索半人马座α星的科幻想法。 ①②③④⑤⑥

It is believed that the construction of a highway will_____ the growth of the suburbs.

The Chinese government has made theMid-autumn Festival a level holiday, _______people will have a day off. A.when B. which C.where D. since

ingChristianity, witnesses have to _______ on the Bible to tell the truth.

She usually ______ hard at school when she was a student.