Jessica has always been honest and straightforward, and it doesn’t matter ______ that she’s talking to.

A．who is it          B．who it is           C．it is who           D．it is whom

Comparison may make something appear more beautiful than it is when ______ alone.

A．to see            B．seeing            C．is seen            D．seen

Chemical pollution will bring about a threat to agriculture and food chain, and ________ to human health.

A．frequently         B．significantly        C．steadily           D．consequently

Only lately        about the dark secrets behind the seemingly-happy marriage of the golf star Tiger Woods.

A．the public have known                   B．were the public known

C．have the public known                   D．the public knew

We have to give the users something new ________ what we’ve already offered, which is the only way to broaden the appeal of the website.

A．regardless of                           B．in addition to

C．in exchange for                         D．according to

So far all cloned animals have suffered from some different serious disorders, ______ dying soon after birth.

A．many of which      B．many of whom      C．many of them      D．many of that

They had just finished the work _______ there was another one waiting for them.

A．while             B．when             C．as               D．since

Some high officers were punished by law only because they were _______ what didn’t belong to them.

A．possessing         B．possessed         C．in possession of     D．in the possession of

—— I think a design which ________ all the ages and social groups is not easy to make.

—— I can’t agree with you more.

A．admits to          B．appeals to         C．objects to         D．sticks to