－______ English ______ as the official language in Cuba－No； the official language there is Spanish.

I don’t know if Mr. Li ____ to the partythis evening.- I think he will come if he ____ free.

ItisthefirsttimethatI_______thiskindofmooncake

very strict quality control and anything imperfect is ____, so customersfeel secure about our products

is attention _____ on his book, he didn’tnotice me enter his study.