They only stood there with their arms ______ in front of their chest rather than give us a hand.
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.