More and more high-rise buildings have been built in big cities space

If hehis legs yesterday, he _______ the Summer Palace with us now.

Don’t stay up late because you must get up early tomorrow.—Don’t worry, I getting up early.

Thank you for all your hard work last week. I don’t think we ______ it without you.

I had to call a taxi because the box was ______ than I’d expected.