[ Grammar ]
Look at those beautiful birds! They ________________ on the branch.
A. chirp
B. chirping
C. are chirping
D. is chirping

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Modals and Comparative SuperlativeHave vs. HasQuestion tag and + - AgreementNoun, Adjective, and Adverb ClausesPersonal & Possessive PronounsQuantifiers, Countable and Uncountable NounsLet & Be allowed toAdverb of MannerWho vs WhomRelative Pronouns and AdverbsOther quiz:
Tenses - Pasive Voice › ViewI’ve got a very short concentration ______
A. spell
B. phase
C. span
D. stint
Grammar › View
Fill in the blank:
The divers ___merged themselves under water.
A. sub-
B. re-
C. pre-
D. -ing
This program ___ very well.
A. works
B. work
Tenses › View
By the time school opens again, I _____ in this restaurant for eight weeks.
A. would have worked
B. will have worked
C. would work
D. would have to work
E. had been working
