Has been singing… Is a
A. Noun phrase
B. Verb phrase
C. Prepositional phrase

Random Topics:
Present Simple VS ContinuousGerund, Participle, Infinitive, or AppositiveDependent ClausesGerunds and ModalsFrequencyNouns & PronounsNoun ClauseConditional Sentences Type 1would should couldModal Verbs and PermissionOther quiz:
Grammar › ViewHe hurt himself falling off his bike. I wonder ____________ he’ll be able to take part in the match tomorrow.
A. if
B. how
C. when
D. that
Grammar › View
Grammar: Section 1. Passive or Active Voice. Choose the correct option for the active and passive sentences.
I remember my sister helping me in the nick of time (en el último minuto).
_
A. I remember I was helped by my sister in the nick of time.
B. I remember myself being helped by my sister in the nick of time.
C. I remember being helped by my sister in the nick of time.
D. I remember helped in the nick of time by my sister.
Vocabulary and Grammar › ViewGrandma ___ her photos in a big metal box.
A. keeps
B. happens
C. becomes
Subject-Verb Agreement › View
The patient ___ a history of hypertension.
A. Has
B. Have
C. Had
D. Is