Which one of the underlined words or phrases is INCORRECT? Ibn Firas is well known in the Arab World for he's early …

The new airport should ............ by the end of the next year.

Have you seen my new book… ................... ?

I don’t understand this sentence. What .......................... ?

Mr. Amir, ---------------the students call Uncle Amir, taught the boys physical education several times a week.

Since it’s raining outside, ............ you like to stay in and watch a movie?