______ can be used independently without being combined with other morphemes.A．Free morphe

Diesel engine exhaust gas temperatures can be used to determine individual cylinder _____.

________ they are observing can be tested in a practical way, scientists will use exp

Tax,______ can be used in public services, is very important to our country.

The following determiners can be used with uncountable nouns EXCEPT_____.A．heaps ofB．umpte

______ are those that cannot be used independently but have to be combined with other morp

The electric shaver______before it can be used.A．must repairB．should be in repairC．has to