When boundaries between countries are not clearly （), there is trouble.

A.on

B.at

C.in

D.of

Please ______dictionaries when you are not sure of word spelling or meaning.

A) seek & nbsp B) inquire C) search D) consult

Harry was ________ by a bee when he was collecting the honey.

A) stung B) stuck C) bitten D) scratched

When people become unemployed, it is _____ which is often worse than lack of wages.

A) laziness B) poverty C) idleness D) inability

A.sang

B.has sung

C.was singing

Please dictionaries when you are not sure of word spelling or meaning.

A) search B) seek C) inquire D) consult

A.will

B.planned

C.meant

D.meaning

When carbon is added to iron in proper the result is steel.

A) rates B) densities C) proportions D) thicknesses

In previous times, when fresh meat was in short _______, pigeons were kept by many households as a source of food.

A) store B) provision C) reserve D) supply

Please be careful when you are drinking coffee in case you __________ the new carpet.

A) crash B) pollute C) spot D) stain