Scientists are convinced______ the positive effect of laughter______ physical and mental health.
#26517
A
of ; at
B
by ; in
C
of ; on
D
on ; at
推荐题目
Look ___ the note ___ the text ___ page 58.
#28886
A
at….of…on
B
at….to …of
C
at…on…of
D
at….to…on
The boy was sitting _____ his mother, _____ his back _____ the door.
#28477
A
next to…with…to
B
nearly…of…against
C
close to…with…on
D
near…in…towards