A.the smallest of which | B.the smaller of which |
C.the smallest of them | D.the smallest of all |
2 . World Environment Day is a UN Environment-led global event,
A.where | B.what | C.that | D.which |
A.that | B.which | C.who | D.it |
A.which | B.what |
C.whose | D.where |
A.that | B.which |
C.it | D.what |
A.that | B.where |
C.which | D.who |
A.which | B.who |
C.as | D.that |
A.what | B.when |
C.where | D.which |
A.that | B.which |
C.who | D.when |