There were more than 1,400 occasions last year ________ access to humanitarian aid was denied in some conflict zones.
A. of which B. in which
C. on which D. at which
Puberty is the phase of life ________ youths leave childhood and head into adulthood, _______ is a difficult physical and emotional process.
A. when; which B. where; that
C. that; which D. that; what
The two men were ________ the heavy trunk for nearly ten minutes, trying to get it up the stairs.
A.toying with B.interfering with C.wrestling with D.conflicting with
The expression “add oil” has enjoyed so much popularity in the past years, ________ was collected into the OED last month.
A.that B.which C.as D.when
—I’d been standing there for several minutes before he ________ my presence.
—He must have been absorbed in his reading.
A.neglected B.maintained C.registered D.revealed
It took over a decade for the economist’s far-sighted views to gain _______, but they have widespread support now.
A.currency B.certificate C.sympathy D.scholarship
