[ Grammar ]
It is essential that boarding cards …………… before passengers get on the plane.
A. having been checked
B. to be checked
C. would be checked
D. be checked

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Grammar › ViewChoose the correct statement FORMATION of the Simple Present Tense
A. Sub + was + ver+ing + extra information
B. Sub + base verb+ was + include ‘s’, ‘es’ and ‘ies’ + subject + verb
C. Sub + base verb + include ‘s’, ‘es’ and ‘ies’ + subject + verb
D. Sub + was + extra information
Grammar › View
Choose the correct auxiliary verb
…… you like another cup of coffee?
A. Should
B. Would
C. Shall