When workers are organized in trade unions, employers find it hard to lay them .

A. permits B. should permit C. will permitD. permitting

A. when B. where C. whatD. which

A. have been conducting B. were conductingC. had been conducted D. are conducted

A. extension

B. intention

C. attention

D. attraction

A. put off

B. put down

C. put out

D. put up

A. recollect

B. remind

C. remember

D. recall

A. made up

B. made off

C. made for

D. made out

A. convenient

B. comfortable

C. adaptable

D. available

A. in

B. by

C. with

D. from

A. unfortunately

B. purposefully

C. eventually

D. initially