she can speak quite fluent English.she___.A must been in the USA for timeB must have been in the USA for some timeC should have been in the USA for some time D May be in the USA for some time

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she can speak quite fluent English.she___.A must been in the USA for timeB must have been in the USA for some timeC should have been in the USA for some time D May be in the USA for some time
she can speak quite fluent English.she___.
A must been in the USA for time
B must have been in the USA for some time
C should have been in the USA for some time
D May be in the USA for some time

she can speak quite fluent English.she___.A must been in the USA for timeB must have been in the USA for some timeC should have been in the USA for some time D May be in the USA for some time
B