The red flag looksextremely beautiful _____ the blue sky and white clouds

The research Tuyouyou has devoted all her life to ________to be ____ great value.

The man didn’t know ________ the thief broke into the house and stole all his valuable things. [ ]

251. The America’s selling weapons toTaiwan cast a shadow on the Sino-U.S relationship. Which of the following canexplain the underlined part

He feels like the Internet day and night. Tell him not to do it again.