[ Modals and Tenses ]
Use the present simple: Water ___ (boil) at 100 degrees Celsius.
A. boil
B. boils
C. boiling
D. boiled

Random Topics:
Es and SIndependent ClausesGrammar for TOEFLTenses - Present and PastAdverb or AdjectivePossessive Pronouns and Adjective PronounsPreposition on TimeModals of Necessity and SuggestionAdverbs of Manner, Likes and PreferencesAdverb ClauseOther quiz:
Simple Past Tense › ViewMy brother … off the bike when we cycled at the park.
A. fell
B. falls
C. felt
D. fallen
Grammar › View
I …….. my grandparents every Saturday.
A. have visited
B. visit
C. am visiting
D. have been visiting
Adjective › ViewMy sister’s got two young children.
a. correct
b.wrong
Homonyms › View
In olden days most women could ___ beautifully.
a. so
b. sew
