Fill in the gaps with proper grammar form

1. The juice carriers ___ special bulk vessels with tanks that can hold half a million liters of drinkable juice or concentrate.

a/ are being

b/ are

c/ were

2. The fish processing business ___ mostly around maintenance of the quick-cool and quick-freeze time periods.

a/ revolves

b/ revolving

c/ revolve

3. The tanks ___ a special self-supporting prismatic shape for better utilization of hold spaces.

a/ has

b/ has got

c/ have

4. The tanks are ___ to extend along the full width of the ship.

a/ construct

b/constructed

c/ constructing

5. After completing shipyard-sponsored safety trainings, ___ included permit to work and entry into confined spaces routines, the cleaning expert set up his equipment.

a/ what

b/ which

c/ whose

6. At 17:00, tests ___ carried out which confirmed that the inhibitors were still active and the water/acid colour and pH readings confirmed that the acid strength was still satisfactory.

a/ were

b/ had been

c/ was

7. Last morning two cleaning experts ___ testing of acid inhibitors activeness.

a/ was carrying out

b/ carried out

c/ were carrying out

8. By that time both cleaning experts ___ the steam drum door.

a/ had approached

b/ were approaching

c/ approached

9. The UK refrigeration plant expert ___ just ___ his job.

a/ have completed

b/ has completed

c/ had completed

10. When they entered the UK expert ___ already ___ Ph content in water.

a/ has checked

b/ have checked

c/ had checked

1. The basis construction of a membrane system consists ___ insulation called barriers.

a/ off

b/ with

c/ of

2. An LNG tanker was berthed ___ a shipyard, undertaking repairs to her port and starboard main boilers.

a/ behind

b/ alongside

c/ near

3. He was found to be unconscious, and had suffered a number ___ fractures.

a/ off

b/ of

c/ out

4. Nobody were aware ___ his impending arrival.

a/ off

b/ about

c/ of

5. The atmosphere must be correctly tested ___ both toxic and flammable gases.

a/ on

b/ for

c/ about