Which of the underlined words or phrases INCORRECT? Last month, Ahmad sends over ten messages to his boss about his job …

Which sentence is correct?

I really enjoy… ................ in malls.

If I....... a bird, I would fly far away from this cold weather.

The teacher suggested he......Jan and A grade, but in the end, he decided on a B.

Since the time of the Prophet Ibrahim, the Holy Mosque in Makkah .................... by billions of pilgrims.