The doctor shares his phone number with the patients __________ they need medical assistance.
A、ifonlyD
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We’dbetterdiscusseverything_______beforeweworkouttheplan.
Teachers have to constantly update their knowledge in order to maintain their professional ___.
Thefactthatsomanypeoplestillsmokeinpublicplace_______thatwemayneedantionwidecampaigntoraiseawarenessoftheriksofsmoking.
__________ the convenience of digital payment, many senior citizens started to use smart phones.
Unlike traditional gyms, app-backed gyms offer people ___________ options to exercise.
