open cloze

social system

, although our knowledge

OK, I'll try my luck again-but there seems to be some problems with the latter part of the second sentence there is no verb in the dependent (?) clause:

1-- structure
2-- development ?

My apologies. I've left out 'is' and a comma.

Some whale species have a sophisticated social ____. Their communication system may contain some of the elements of true language, ____ our knowledge of whale communications is not very advanced.

Dear Koh,

Here's my take on it-- Skill/System
Although

Do you believe this question is for Grade 5 students? I think Singapore's education system in regard to English is going crazy.

I'll get the answers from my student in about ten days' time.

Hi YL

Here's my two cents:
I'd suggest network in the first sentence.
It seems to me that you need a coordinating conjunction in the second sentence, so I think but would work well there.

Hi Amy

I'll get the answers from my student in about ten days' time. I always feel that it is not fair to expect Grade 5 students to fill in the blanks without providing them with options.

Their communication system may contain some of the elements of true language, ____ our knowledge of whale communications is not very advanced.

Well, at least you have shown how important a comma can be.

Mister Micawber

Their communication system may contain some of the elements of true language, ____ our knowledge of whale communications is not very advanced.

Well, at least you have shown how important a comma can be.

It was a typo. My apologies.

Hi

My student's teacher has provided the following answers to the two blanks.

Some whale species have a sophisticated social system. Their communication system may contain some of the elements of true language, although our knowledge of whale communications is not very advanced.