Rich people can afford to ________ hobbies they like

_ has recently been done to providemore buses for the people, a shortage of public vehicles remains a seriousproblem

The fog in your city must have been very thick; if not, you would have been here as scheduled.—Yes. Our flight _________ by the thick fog.

下列各句中加点成语的使用，全不正确的一项是①日本宇航机构负责人对中国的航天技术不以为然，事实上“长征”运载火箭已发射了100多次，而日本的主力火箭“H-2

The split between humans and living apes isthought by some scholars ____ 15 to 20 million years ago