modal verbs

my brother is only 6, but he ......... already play the piano

• may

• can

.......... you open the window, please ?

• could

• should

perhaps jerry ...... pass the exam tomorrow

• may

• can

students..... listen to the teacher

• may

• must

you look very pale.

i think you ..... go to the doctor.

• should

• might

i must be at work at 9 o'clock every day.

so, i ....... wake up at 7 o'clock.

• have to

• might

he .... open the door,it's stuck.

• can't

• may

...... you bring me a glass of cold water ?

• could

• might

i ... go to summer school than graduate late

• would rather

• would prefer

i .... see a doctor because i felt very sick

• had to

• have to