________the teachers in our school is 150 and some of them are_______ teachers.

Are you going to go shopping thisafternoon —No，I’m _____ tired _____go．

Since David ________ downloaded a virus into his computer，he can not open the file now[ ]

Do you mind my opening the window—-______I feel a bit cold.

Once or twice he has had difficulty making decision on his own, but ______ he is an independent man[ ]