What form of ice is of land origin?（）

We have no steel wire．You had better（）us one.

What is the primary purpose of a splint applied in first aid?（）

The transmission of messages respecting the dangers specified is free（）cost to the ships concerned.

The vessel was drifted off from her（）due to strong wind.

The term OIL as used in the Oil Pollution Regulations means（）.

There is plenty of（）at this area.

The radiotelegraph alarm signal is（）.

What happens to the efficiency of an anchor when it is moved from sand to mud?（）

To reduce mild fever the MOST useful drug is（）.