請教8老師和有經驗的朋友，
（1）綠卡沒有過期，但在國內逗留超過了1年（因為健康原因），有可能回來美國麽？還是一定要申請SB-1?
-Technically, you need to apply for SB-1 visa. Prepare the evidences which prevented you from return to US in time such as illness dignosis, hospital bills. Also, you can address that you were unable to get the air ticket due to Covid 19 which resulted in many airlines flights cancelled.
（2）廣州現在辦理SB-1簽證麽？我在廣州領館的網上，找不到申請的門路呢？我在廣州領館的網上找到的鏈接，是連到USCIS的網站；可是，從USCIS的網站的鏈接，又回到廣州領館的網上。來回兜圈子，沒找到有用信息。
-Read this website:
Apply for a U.S. Visa | SB-1 Visas: Returning Residents - China (English) (ustraveldocs.com)
Chinese version:
申請美國簽證 | SB-1類簽證： 回美簽證 - 在中國 (ustraveldocs.com)
Email Contact at:
Immigrant Visa Unit - Question | U.S. Embassy & Consulates in China (usembassy-china.org.cn)
（3）現在申請，也一定要麵試麽，-Yes. twice.
還是可以郵寄？大概多少時間？-Hard to say, case to casee. Normally one to two years.
