Someconsumerswouldtrytosolvetheirissuesonlinebefore____our customer service.
A. to contact
B. contact
C. contacted
D. contacting
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Smartwatchesofferpeoplethewayin____theycanmonitortheirhealth .
A. who
B. which
C. whom
D. that
Some people believe _____ smart these robots are,they are not human .
A. however
B. wherever
C. whatever
D. whenever
Yesterdaytheboss_____toanswerquestionsfromhisemployee.
A. invite
B. was invited
C. inviting
D. invited
Onlineshoppinghasitsownlimitations,andsometimescanbeeven_____than buying in a store.
A. expensive
B. most expensive
C. more expensive
D. expensively