They ______ their grandparents last summer.
A. visit
B. visited
C. are visiting
D. have visited

Random Topics:
Correlative Conjunction & Complex SentencesPassive Voice - Past SimpleSo or SuchRoot WordRelative Clauses with who and whichTenses and ArticlesDemonstrative PronounVocabulary : Coming & GoingSimple Future TenseTenses - Present and PastOther quiz:
Verb and Preposition › ViewIn the sentence “She sent her friend a letter,” what is the direct object?
A. She
B. her friend
C. sent
D. a letter
Grammar Comma Usage › View
. Which sentence correctly uses commas in a list?
A. Clams shrimp and crabs all live on the seafloor.
B. My list of nightly chores includes washing the dishes cleaning my room and doing my homework.
C. Clams, shrimp, and crabs, all live on the seafloor.
D. My list of nightly chores includes washing the dishes, cleaning my room, and doing my homework.
Grammar › ViewAlicia, __________ the windows please. It’s too hot in here.
A. Opens
B. Open
C. Opened
D. Will open
Present Perfect Tense › View
Marilyn __________ the bill.
A. has paid
B. has payed
C. have paid
D. have pay
