-What's the matter with our English teacher? She always looks tired.-There are 75 students in our class. She work for more than 10 hours everyweekday.She can't get enough rest.
She _______ when I went to see her.
We won’t go to the Great Wall until the rain _______.
I will give the message to him __________he comes back.
We won’t go to the Great Wall if it ___________ the day after tomorrow.
---What do you think Sam ________ in 10 years? ---A doctor.