The noise of desks___could be heard out in the street.
举一反三
- The noise of desks___could be heard out in the street. A: opened and closed B: to be opened and closed C: being opened and closed D: having been open and closed
- At the beginning of class, the noise of desks ____ could be heard outside the classroom.
- At the beginning of the class,the noise of desks ________could be heard outside the classroom. A: opened and closed B: to be opened and closed C: being opened and closed D: to open and close
- The noise of the desks _____ could be heard in the next classroom. A: being opened and closed B: opened and closed C: having been opened and closed D: to be opened and closed
- We___them because of the noise from the river then. A: could not have heard B: must not hear C: need not have heard D: may not hear