If vocabularies are the”building materials”of language,sentences are the”___parts” of writing
--- I’ve got your invitation. --- Oh, good. ______
--- Can you find me _______ symbol of China? --- ______ Great Wall.
Bob ________ with us together since he came to our school.
When I came into the teacher’s office, he ________ on the phone.
Tony decided to study abroad _______ he knew he would meet many difficulties.