--- How old can you guess your new English teacher is?--- It’s hard to say.But I guess him to be _________ between 35 and 40.
The infrastructure of a country is makes everything run smoothly, including things like transport, irrigation, electricity, postal service, telephones and schools.
We should be able to do the job for you quickly, you give us all the necessary information.
Someone is ringing the doorbell. Go and see .
It is said that the student seriously ill for two months last semester.
From where I stand, the key to the test is to practise English every day.