Experts insist that packets of cigarettes come with a health warning ______ to them.

she began reading and saw what fun it was, there was no stopping her.

They often change the kind of crop ineach field ____ few years, for example, growing corn or wheat and then the nextyear peas or soybeans. A. every B.a C.each D.some

_Why is John so poor at his lessons _Henever studies ，heplays computer games all day

ung parents _________ too much a pet of their son, which is bound to destroy him in the end.