ONLINE TOEFL ELF EDUCATION
Distinguish possessive adjectives and pronouns
After will, would or other modals, use the base form of the verb
After be, use the present participle or the past participle
Use the irregular -er, -er structure correctly
Use parallel structure with paired conjunctions
Use parallel structure with coordinate conjunctions
Make verbs agree after expressions of quantity
Toefl Review Exercise Structure Skills 1-19