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You should keep an eye ______ him, for I have lost faith ______ him.
#27431
A
in; on
B
on; in
C
at; at
D
for; for
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 Knowing what colors look good _______ your skin is of great importance when you buy clothes.
#25123
A
beyond
B
within
C
against
D
Over
Only by ______ your attention ______ what you are learning can you learn it well.
#28490
A
focus；on
B
pay；on
C
focusing；on
D
paying；on
 I’ll be back _____ 5 o’clock tomorrow afternoon.
#28261
A
about
B
around
C
until
D
for
 Barack Obama was very happy when many supporters voted ________ him.
#25429
A
on
B
for
C
against
D
at
Ireland lies ___ of Britain.
#28181
A
in the east
B
in the west
C
to the east
D
to the west