Pine trees, of which there are almost one hundred ____, are found throughout the North Temperate Zone.
__________ the students, the teacher came into the room smiling.
I have told you the truth. ______ I keep repeating it? A Must B Can C May D Will
Can you think of some cases ________ people can communicate only by means of body language?
A great number of students said they were forced to practise the piano.
I like _____ in spring when everything turns green and active.