[ Relative Clauses ]
A new security door, ______________________ can be operated by remote control, will be installed next month.
A. that
B. it
C. them
D. which

Random Topics:
Gerund & ParticipleSimple Present and Simple PastPrepositions and TensesWH- Question WordsVerb + InfinitivePhrases and TensesHave vs. HasLexico and GrammarGerunds/InfinitivesModals and VocabularyOther quiz:
Grammar › ViewWhat is the weather here?
A. It’s rainy
B. It’s sunny
C. It’s snowy
D. It’s cloudy
Grammar › View
The sky is full of stars ______ night.
A. on
B. in
C. at
D. to
Gerunds, Infinitives and Modals of Possibility › ViewShe ___ be at home, but I’m not sure.
A. might
B. will
C. has to
D. should
Simple Present Tense › View
We cooked a chocolate cake every monday
A. True
B. False
