[ Vocabulary ]
The company has a computer technician …….. call 24 hours a day.
A. at
B. on
C. in
D. of

Random Topics:
Past PassiveArticles with SubstancesAsking and Giving SuggestionGrammar - Wh QuestionsConjunctions, Prepositions and InterjectionsPresent and Past TensesQuestion TagsHave toAdjectives with -ED and -INGModals for ObligationOther quiz:
Passive Sentence › View“Are we about to have dinner?”.
“Yes, it _____ in the dinning room”
A. is serving
B. serves
C. is being served
D. Served
Future Tenses › View
Somebody fainted,
A. I am going to call for help.
B. I am calling for help.
C. I will call for help.
Prepositions › ViewIt’s hot. I need to take _________ my jacket.
A. on
B. in
C. of
D. off
Grammar › View
Idora ate two bowls of noodles and three buns because she was as hungry as ……… .
A. a lion
B. a wolf
C. a bear
D. an ox
