Fertilizers are used primarily to enrich the soil and increasing yield of crops
A.are
B.primarily
C.the soil
D.increasing

______(46)
A.knowing
B.knew
C.is known
D.known

_______(48)
A.thanks for
B.thanks to
C.in spite of
D.instead of

_______(49)
A.in
B.throughout
C.over
D.of

Can I help you? -No, thank you. I _____________.

A.served
B.am serving
C.was serving
D.am being served

–Laura: “What a lovely house you have!” -Maria: “____________.”
A.Of course not, it’s not costly
B.Thank you. Hope you will drop in
C.I think so.
D.No problem

The doctor decided to give her a thorough examination ________ he could identify the causes of her illness.

A.after
B.so as
C.unless
D.so that

It is ________ to talk about a problem than to solve it.
A.easier
B.easiest
C.easy
D.more easier

The doctor advises me staying in bed, but it’s just so boring.
A.the
B.staying in bed
C.but
D.boring

There is a species of bird that are threatened with extinction.
A.species
B.of bird
C.are threatened
D.with